Python Basics簡単

Addition of two fractions

Detailed guide and Python implementation for the 'Addition of two fractions' problem.

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簡単

Write a function add_fractions(a, b, c, d) that takes four integers representing two fractions a/b and c/d, and returns the result as a tuple (numerator, denominator) in its simplest form (reduced by GCD).

The formula for adding fractions is: a/b + c/d = (a*d + b*c) / (b*d), then simplify by dividing both numerator and denominator by their GCD.

制約
  • 1 <= b, d <= 1000
  • -1000 <= a, c <= 1000
  • b and d are not zero

Example 1
Input
add_fractions(1, 2, 1, 3)
Output
(5, 6)
Explanation

1/2 + 1/3 = (1×3 + 2×1) / (2×3) = 5/6. GCD(5,6) = 1, so result is 5/6.

Example 2
Input
add_fractions(2, 4, 3, 6)
Output
(1, 1)
Explanation

2/4 + 3/6 = (2×6 + 4×3) / (4×6) = 24/24 = 1/1.

Example 3
Input
add_fractions(1, 3, 2, 3)
Output
(1, 1)
Explanation

1/3 + 2/3 = 3/3 = 1/1.

Need a Hint?
Consider using Numbers-specific data structures like sets or heaps.
Edge Cases to Watch
  • Empty input structures
  • Single element inputs
  • Large numerical bounds

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